Synopsis

A human explorer known in the episode as the author of The Little Mermaid story, Hans Christian Andersen, boards a primitive submarine to explore the undersea realm, and crosses paths with Ariel when his submarine is damaged and starts to leak.

Trivia

Ariel's implied role in the creation of the original story (published in 1837) in this episode strongly implies that the franchise takes place during the early-to-mid-19th century.